Apparatus for retouching negatives.



1 HORAK. APPARATUS FOR RETOUCHING NEGATIVES.

APPLICATION FILED JAN-6,1913- 1,231,740. Patented July 3 1917.

UNITED STATES PATENT OFFIOEQ JAROSLAV HORAK, OF ALTSTADT, AUSTRIA, ASSIGNOR TO BURKE & JAMES, INC., OF CHICAGO, ILLINOIS.

APPARATUS FOR RETOUCHING NEGATIVES.

Application filed January 6, 1913.

To all whom it may concern:

Be it known that I, JARosLAv HORAK, a subject of the Emperor of Austria, and resident of Altstadt, Austria, have invented certain new and useful Improvements in an Apparatus for Retouching Negatives, of which the following is a specification.

This invention relates to an apparatus for retouching negatives of the type having a support for the negatives, and a hand rest.

The object of the invention is to provide simple and effective means for imparting movement to the negative, so as to cause a pencil point held against movement in contact with the surface of the same to produce small circular lines and spots at the points to be retouched.

The invention also comprehends improve ments in the details of construction and arrangement of parts which will be hereinafter described and particularly pointed out in the claims.

In the drawings:

Figure l is a longitudinal section of my improved apparatus.

Fig. 2 is a detail plan view of the negative holder.

Fig. 8 is an enlarged detail view of one end of the apparatus to illustrate more clearly the means for producing the gyroscopic movement of the negative.

Fig. 4 is an enlarged detail plan view of one end of the frame on which the operating wheels are supported.

Fig. 5 is a detail section on the line m:0 of Fig. 2.

Heretofore, so far as I am informed, retouching apparatus of the type to which this invention relates has been provided with means for vibrating, oscillating or otherwise imparting a substantially reciprocatory movement to the negative in a direction substantially perpendicular to the sensitized surface to be treated so that by holding a pencil in the path of movement of said negalive the latter would contact therewith and cause a dot or dots to be applied to such negative. the effect of a large number of the latter bring to stipple the negative.

Other apparatus of a different type consists of pencil holders containing movable pencil points, the latter geared to means for imparting reciprocatory or rotary movement to the point relatively to the holder whereby Specification of Letters Patent.

Patented July 3, 1917.

Serial No. 740,514.

to stipple or draw small circles on the negative.

My invention, as previously pointed out, comprehends means for producing small circles on negatives by a mechanical movement imparted to the latter relatively to a pencil point resting thereon and includes means enabling the pencil point to be held in a fixed position, such means being exemplified in the hand rest, on, broadly stated, the invention comprehends and includes a negative support and a hand rest and mechanism for imparting such relative movement to said parts as will produce the effect constituting the object of the invention, it being apparent to persons skilled in the art that although the preferred embodiment of the invention is as herein illustrated, the same is capable of embodiment in other forms, and devices as may be in keeping with the appended claims.

In the drawing, (1 indicates a base, in the upper surface of which is supported a mirror a Hinged to the base a is a box-like frame formed with an open bottom Z), a cen tral open partition 0, and an open top dounted in ball bearings 0, at the four corners of the bottom 6, are shafts (Z' on the upper ends of which are secured grooved wheels (Z. Around the wheels passes a chain or belt (Z and motion is imparted to said chain by a pulley n, mounted on a shaft n, the outer end of the latter having a pulley 0, motion being imparted to the latter by any suitable means (not shown).

On top of each wheel (Z is an enlargement (W, in the upper surface of which is a slight recess (Z Each of said recesses is disposed equidistantly from the axis of the wheel so as to describe equal circles during rotation of said wheels; it being essential. that the latter rotate in unison, and that the radial lines intersecting each wheel axis and the center of such recess be at all times parallel and extend in the same direction from the re spective wheel axis.

Directly over each wheel (Z, the central partition 6 is formed with an opening 6, and over each opening is a plate 6 formed with a central opening 6 all of said openings being axially alined with the axes of rotation of the respective wheels (Z, and extending through these openings are four pins the ends of said pins. The simultaneous ro- 7, each pointed at both ends, the lower ends fitting in the recess d These pins are disposed at an angle to the axis of the wheels (Z, and engage between their ends in the openings e, which constitute bearings therefor, as clearly shown in Fig. 3.

Disposed above the central partition 6, is a rectangular negative holder g, in the four corners of which are studs h, the bottoms of the latter having recesses 7?, in which the upper pointed ends of the pins f engage. The studs are suitably mounted in the negative holder and are rigid therewith.

The negative holder is resiliently held into contact with pins 7, by springs 72- whose upper ends are attached to the frame and the lower ends are secured to plates 6 on the under side of the partition 6. Obviously these springs are tensioned to draw the negative holder down on the pins.

The negative holder comprises an open frame 9' formed by longitudinal and transverse bars g and a piece of ground glass on. suitably supported on said bars. The longitudinal side bars of the frame g are formed with slots 9*, and extending transversely across the frame are two negative receiving guides 76, k, each having bolts 1, the ends of which engage in the slots 9*, the bolts having nuts Z to fasten the guides Zc-J.) to the frame. The negative indicated at y', is engaged by overhanging flanges on the guides Z9, 70, and obviously by adjusting the latter, any size negative within a given range may be secured to the frame.

Hinged to the rear of the top of the boxlike frame 6 is a shade i to prevent the light being cast on the negative and ground glass. In operation, motion is given the chain d", which simultaneously rotates the wheels (Z, a pencil w, of course, being held over the point of the negative to be retouched. The rotation of wheels (Z, because of the engagement of the pins in the recesses (Z rotate the latter in the bearings e in the plates 6 The pins in the instance illustrated, extend only a relatively short distance above the plates 0 as compared with the distance of their projection below the same and consequently the diameter of rotary movement or of the circles described by the upper ends of said pins is very small compared to the diameter of rotary movement of the lower ends thereof, the relative diameters of the circles described by the upper and lower ends of Said pins being dependent on the points between the ends of the latter engaging in the bearings 6 such circles becoming more nearly equal in diameter as the bearings approach the points midway between tation of the wheels (Z coupled with the aforesaid fixed relative positions of all recesses (Z with respect to the axes of said wheels, will cause all of said pins to coact to impart uniform motion to each point in the negative carrier, such motion being gyratory in the plane of the negative supporting surface. Such motion may be slow or rapid and if very rapid will produce practically vibratory gyration of the negative engaged with said carrier or holder.

' lVhile the negative is thus gyrated, the operator simply applies the pencil point to the various spots on the negative to be retouched, holding such pencil rigid with the result that a series of small circular lines or spots will be produced to effect the retouching operations. The operator rests the hand holding the pencil on the frame 9 above the negative holder, the latter being gyrated relatively to said frame or support for the hand.

What I claim is 1. Retouching apparatus comprising a support for the negative, a hand-rest for enabling a pencil point to be applied upon all desired portions of the negative, and. means for effecting a continuous equal minute relative movement in a plurality of directions between the said support and said hand-rest face-wise of the supported negative, whereby the contact of the pencil point with the face of the negative will produce marks of equal appreciable dimensions on every portion of said negative to which the pencil point is applied.

2. Retouching apparatus comprising a support for the negative, a hand-rest for enabling a pencil point to be applied upon predetermined portions of the negative and. means for effecting a minute relative gyratory movement between the said support and said hand-rest face-wise of the supported negative, whereby every point in the support describes a circle of the same radius and the contact of the pencil point with the face of the negative will produce equal circles on all portions of the face of the negative to which the pencil point is applied.

3. Retouching apparatus comprising a. support for a negative, a hand-rest for enabling a pencil point to be applied upon predetermined portions of the negative, said support andsaid hand-rest adapted to be tilted, and mechanism for effecting a minute relative movement between the said support and said hand-rest face-wise of the supported negative whereby all points upon the support describe identical paths and the contact of the pencil point upon any portion of the negative will produce a mark of a size equal tothe whole extent of relative movement of the support and hand-rest.

at. In a retouching apparatus a negative support enabling the application of a pencil point to any portion of the upper surface of a supported negative and mechanism for imparting a minute gyratory movement to the negative support, whereby the minute circles produced by the application of a pencil point will be uniform in dimensions regardless of the point of application.

5. In a retouching apparatus, a frame, a plurality of elements mounted to rotate about parallel axes, means for rotating the same in unison, means for supporting a negative to cause the faces thereof to extend perpendicularly to said axes, and means for transmitting the movement of said rotatable members to said negative-supporting means to cause the faces of the latter to gyrate about said axes inminute circles.

6. In a retouching apparatus, a frame, a plurality of elements mounted to rotate about parallel axes, means for rotating the same in unison, means for supporting a negative to cause the faces thereof to extend perpendicularly to said axes, and means for transmitting the movement of said rotatable members to said negative-supporting means to cause the faces of the latter to gvrate about said axes, said means including members rigid with the frame having openings in axial alinement with the axes of rotation of said elements, and pins passing through said openings, and each engaged with one of said elements laterally of its axis of rotation and at its other end with said negative-supporting means.

7. In a retouching apparatus, a frame, a plurality of elements mounted to rotate about parallel axes, means for rotating the same in unison, means for supporting a negative to cause the faces thereof to extend perpendicularly of said axes, each of said elements equipped with a tangibly appreciable part disposed laterally of its axis of rotation and describing a circle of given diameter, and means engaged with said tangibly appreciable parts and with said negativesupporting means for transmitting the movement of said rotatable elements directly to the negative-supporting means in circles of smaller diameter than those described by said tangibly appreciable part.

8. In a retouching apparatus, a frame, a plurality of elements mounted to rotate about parallel axes, means for rotating the same in unison, means for supporting a negative to cause the faces thereof to extend perpendicularly of said axes, each of said elements equipped with a tangibly appreciable part disposed laterally of its axis of rotation and describing a circle of given diameter, perforated elements rigidly mounted in the frame between said rotatable elements and said negative-supporting means, and devices passing through perforations in said perforated elements and engaged at opposite ends with said tangibly appreciable parts and said negative-supporting means for transmitting the movement of said rotatable elements directly to the negativesupporting means in circles of smaller diameter than those described by said tangibly appreciable parts.

9. In. a retouching apparatus, a hand-rest and a negative carrier, and mechanism for imparting minute gyratory movement to one of said parts relatively to the other in a plane parallel with the plate of the negative-supporting surface of said carrier, whereby every point in the support describes a circle of the same radius.

10. In a retouching apparatus, a frame, a plurality of elements mounted to rotate about parallel axes, means for rotating the same in unison, means for supporting a negative to cause the faces thereof to extend perpendicularly to said axes, and means for transmitting the movement of said rotatable members to said negative-supporting means to cause the faces of the latter to gyrate about said axes, said means including members rigid with the frame having openings in axial alinement with the axes of rotation of said elements, and pins passing through said openings and each engaged with one of said elements laterally of its axis of rotation and at its other end with said negative supporting means.

11. In a retouching apparatus, a frame, a plurality of elements mounted to rotate about parallel axes, means for rotating the same in unison, means for supporting a negative to cause the faces thereof to extend perpendicularly of said axes, each of said elements equipped with a tangibly appre ciable part disposed laterally of its axis of rotation and describing a circle of given diameter, and means engaged with said tangibly appreciable parts and with said negative-supporting means for transmitting the movement of said rotatable elements directly to the negative-supporting means in circles of smaller diameter than those described by said tangibly appreciable part.

12. In a retouching apparatus, a frame, a plurality of elements mounted to rotate about parallel axes, means for rotating the same in unison, means for supporting a negative to cause the faces thereof to extend perpendicularly of said axes, each of said elements equipped with a tangibly appreciable part disposed laterally of its axis of rotation and describing a circle of given diameter, perforated elements rigidly mounted in the frame between said rotatable elements and said negative-supporting means, and devices passing through the perforations in said perforated elements and engaged at opposite ends respectively, with said tangibly appreciable parts and said negativesupporting means for transmitting the movement of said rotatable elements directly to the negative-supporting means in circles of smaller diameter than those described by said tangibly appreciable parts.

13. In a negative retouching apparatus, the combination of an open frame, a negative holder mounted in the frame, a plurality of rotary pins inclined With respect to the negative holder and bearing on the latter, and means for supporting and simul taneously rotating all the inclined pins to 'im )art a rator movement to the holder.

1%. In a retouching apparatus, the comblnation oi an open frame, a negative holder mounted in the frame, supporting devices extending from determinate points on the negative holder, means on which the supporting devices rest and which imparts a horizontal gyratory movement to said supporting devices, and means for resiliently holding the negative holder 011 the supporting means.

JAR-OSLAV HOB-AK. Witnesses AUGUST FUGGER, ADA MARIA BERGER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

